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| -rw-r--r-- | include/ucbhelper/contenthelper.hxx | 448 |
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diff --git a/include/ucbhelper/contenthelper.hxx b/include/ucbhelper/contenthelper.hxx new file mode 100644 index 000000000..3f269e475 --- /dev/null +++ b/include/ucbhelper/contenthelper.hxx @@ -0,0 +1,448 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef INCLUDED_UCBHELPER_CONTENTHELPER_HXX +#define INCLUDED_UCBHELPER_CONTENTHELPER_HXX + +#include <com/sun/star/beans/XPropertyContainer.hpp> +#include <com/sun/star/beans/XPropertiesChangeNotifier.hpp> +#include <com/sun/star/ucb/XCommandProcessor.hpp> +#include <com/sun/star/ucb/XContent.hpp> +#include <com/sun/star/beans/XPropertySetInfoChangeNotifier.hpp> +#include <com/sun/star/ucb/XCommandInfoChangeNotifier.hpp> +#include <com/sun/star/container/XChild.hpp> +#include <com/sun/star/lang/XTypeProvider.hpp> +#include <com/sun/star/lang/XServiceInfo.hpp> +#include <com/sun/star/lang/XComponent.hpp> +#include <cppuhelper/weak.hxx> + +#include <rtl/ref.hxx> +#include <ucbhelper/ucbhelperdllapi.h> +#include <memory> + +namespace com::sun::star::ucb { + struct CommandInfo; + class XCommandEnvironment; + class XCommandInfo; + class XPersistentPropertySet; +} + +namespace com::sun::star::beans { + struct Property; + class XPropertySetInfo; +} + +namespace com::sun::star::uno { class XComponentContext; } + +namespace ucbhelper_impl { struct ContentImplHelper_Impl; } + +namespace ucbhelper +{ + + +class ContentProviderImplHelper; + +/** + * This is an abstract base class for implementations of the service + * com.sun.star.ucb.Content. Implementations derived from this class are + * objects provided by implementations derived from + * class ucb::ContentProviderImplHelper. + * + * Features of the base class implementation: + * - standard interfaces ( XInterface, XTypeProvider, XServiceInfo ) + * - all required interfaces for service css::ucb::Content + * - all required listener containers + * ( XComponent, XPropertiesChangeNotifier, XPropertySetInfoChangeNotifier, + * XCommandInfoChangeNotifier ) + * - XPropertyContainer implementation ( persistence is implemented using + * service com.sun.star.ucb.Store ) + * - complete XPropertySetInfo implementation ( including Additional Core + * Properties supplied via XPropertyContainer interface ) + * -> protected method: getPropertySetInfo + * - complete XCommandInfo implementation + * -> protected method: getCommandInfo + */ +class UCBHELPER_DLLPUBLIC ContentImplHelper : + public cppu::OWeakObject, + public css::lang::XTypeProvider, + public css::lang::XServiceInfo, + public css::lang::XComponent, + public css::ucb::XContent, + public css::ucb::XCommandProcessor, + public css::beans::XPropertiesChangeNotifier, + public css::beans::XPropertyContainer, + public css::beans::XPropertySetInfoChangeNotifier, + public css::ucb::XCommandInfoChangeNotifier, + public css::container::XChild +{ + friend class PropertySetInfo; + friend class CommandProcessorInfo; + + std::unique_ptr<ucbhelper_impl::ContentImplHelper_Impl> m_pImpl; + +protected: + osl::Mutex m_aMutex; + css::uno::Reference< css::uno::XComponentContext > + m_xContext; + css::uno::Reference< css::ucb::XContentIdentifier > + m_xIdentifier; + rtl::Reference< ContentProviderImplHelper > + m_xProvider; + sal_uInt32 m_nCommandId; + +private: + /** + * Your implementation of this method must return a sequence containing + * the meta data of the properties supported by the content. + * Note: If you wish to provide your own implementation of the interface + * XPropertyContainer ( completely override addContent and removeContent + * implementation of this base class in this case ), you can supply the + * meta data for your Additional Core Properties here to get a fully + * featured getPropertySetInfo method ( see below ). + * + * @param xEnv is an environment to use for example, for interactions. + * @return a sequence containing the property meta data. + */ + UCBHELPER_DLLPRIVATE + virtual css::uno::Sequence< css::beans::Property > + getProperties( const css::uno::Reference< css::ucb::XCommandEnvironment > & xEnv ) = 0; + + /** + * Your implementation of this method must return a sequence containing + * the meta data of the commands supported by the content. + * + * @param xEnv is an environment to use for example, for interactions. + * @return a sequence containing the command meta data. + */ + UCBHELPER_DLLPRIVATE + virtual css::uno::Sequence< css::ucb::CommandInfo > + getCommands( const css::uno::Reference< css::ucb::XCommandEnvironment > & xEnv ) = 0; + + /** + * The implementation of this method shall return the URL of the parent + * of your content. + * + * @return the URL of the parent content or an empty string. + * Note that not all contents must have one parent. There may + * be contents with no parent. In that case an empty string must + * be returned. If your content has more than one parent you may + * return the URL of one "preferred" parent or an empty string. + */ + UCBHELPER_DLLPRIVATE virtual OUString getParentURL() = 0; + +protected: + /** + * This method returns complete meta data for the properties ( including + * Additional Core Properties supplied via XPropertyContainer interface ) + * supported by the content. To implement the required command + * "getPropertySetInfo" simply return the return value of this method. + * + * @param xEnv is an environment to use for example, for interactions. + * @param bCache indicates, whether the implementation should use + * cached data, if exist. + * @return an XPropertySetInfo implementation object containing meta data + * for the properties supported by this content. + */ + css::uno::Reference< css::beans::XPropertySetInfo > + getPropertySetInfo( const css::uno::Reference< css::ucb::XCommandEnvironment > & xEnv, + bool bCache = true ); + + /** + * This method returns complete meta data for the commands supported by + * the content. To implement the required command "getCommandInfo" simply + * return the return value of this method. + * + * @param xEnv is an environment to use for example, for interactions. + * @param bCache indicates, whether the implementation should use + * cached data, if exist. + * @return an XCommandInfo implementation object containing meta data + * for the commands supported by this content. + */ + css::uno::Reference< css::ucb::XCommandInfo > + getCommandInfo( const css::uno::Reference< css::ucb::XCommandEnvironment > & xEnv, + bool bCache = true ); + + /** + * This method can be used to propagate changes of property values. + * + * @param evt is a sequence of property change events. + */ + void notifyPropertiesChange( + const css::uno::Sequence< css::beans::PropertyChangeEvent >& evt ) const; + + /** + * This method can be used to propagate changes of the propertyset + * info of your content (i.e. this happens if a new property is added + * to your content via its XPropertyContainer interface). This base class + * automatically generates events when the propertyset info changes. If + * you provide your own implementations of addproperty and removeProperty, + * then you must call "notifyPropertySetInfoChange" by yourself. + * + * @param evt is a sequence of property change events. + */ + void notifyPropertySetInfoChange( + const css::beans::PropertySetInfoChangeEvent& evt ) const; + + /** + * This method can be used to propagate content events. + * + * @param evt is a sequence of content events. + */ + void notifyContentEvent( + const css::ucb::ContentEvent& evt ) const; + + /** + * Use this method to announce the insertion of this content at + * the end of your implementation of the command "insert". The + * implementation of is method propagates a ContentEvent( INSERTED ). + */ + void inserted(); + + /** + * Use this method to announce the destruction of this content at + * the end of your implementation of the command "delete". The + * implementation of is method propagates a ContentEvent( DELETED ) + * and a ContentEvent( REMOVED ) at the parent of the deleted content, + * if a parent exists. + */ + void deleted(); + + /** + * Use this method to change the identity of a content. The implementation + * of this method will replace the content identifier of the content and + * propagate the appropriate ContentEvent( EXCHANGED ). + * + * @param rNewId is the new content identifier for the content. + * @return a success indicator. + */ + bool exchange( const css::uno::Reference< css::ucb::XContentIdentifier >& rNewId ); + + /** + * Use this method to get access to the Additional Core Properties of + * the content ( added using content's XPropertyContainer interface ). + * If you supply your own XPropertyContainer implementation, this method + * will always return an empty propertyset. + * + * @param bCreate indicates whether a new propertyset shall be created + * if it does not exist. + * @return the implementation of the service + * com.sun.star.ucb.PersistentPropertySet. + */ + css::uno::Reference< css::ucb::XPersistentPropertySet > + getAdditionalPropertySet( bool bCreate ); + + /** + * This method renames the propertyset containing the Additional Core + * Properties of the content. + * + * @param rOldKey is the old key of the propertyset. + * @param rNewKey is the new key for the propertyset. + * @return True, if the operation succeeded - False, otherwise. + */ + bool renameAdditionalPropertySet( const OUString& rOldKey, + const OUString& rNewKey ); + + /** + * This method copies the propertyset containing the Additional Core + * Properties of the content. + * + * @param rSourceKey is the key of the source propertyset. + * @param rTargetKey is the key of the target propertyset. + * @return True, if the operation succeeded - False, otherwise. + */ + bool copyAdditionalPropertySet( const OUString& rSourceKey, + const OUString& rTargetKey ); + + /** + * This method removes the propertyset containing the Additional Core + * Properties of the content. + * + * Propertysets for children described by rOldKey are removed too. + * + * @return True, if the operation succeeded - False, otherwise. + */ + bool removeAdditionalPropertySet(); + +public: + /** + * Constructor. + * + * Note that the implementation of this ctor registers itself at its + * content provider. The provider implementation inserts the content + * in a hash map. So it easily can be found and reused when the provider + * is asked for a content. + * + * @param rxContext is a Service Manager. + * @param rxProvider is the provider for the content. + * @param Identifier is the content identifier for the content. + */ + ContentImplHelper( + const css::uno::Reference< css::uno::XComponentContext >& rxContext, + const rtl::Reference< ContentProviderImplHelper >& rxProvider, + const css::uno::Reference< css::ucb::XContentIdentifier >& Identifier ); + + /** + * Destructor. + * + * Note that the implementation of this dtor deregisters itself from its + * content provider. The provider implementation removes the content + * from a hash map. + */ + virtual ~ContentImplHelper() override; + + // XInterface + virtual css::uno::Any SAL_CALL queryInterface( const css::uno::Type & rType ) override; + virtual void SAL_CALL acquire() noexcept override + { cppu::OWeakObject::acquire(); } + virtual void SAL_CALL release() noexcept override; + + // XTypeProvider + virtual css::uno::Sequence< sal_Int8 > SAL_CALL + getImplementationId() override; + virtual css::uno::Sequence< css::uno::Type > SAL_CALL + getTypes() override; + + // XServiceInfo + virtual OUString SAL_CALL + getImplementationName() override = 0; + virtual sal_Bool SAL_CALL + supportsService( const OUString& ServiceName ) override; + virtual css::uno::Sequence< OUString > SAL_CALL + getSupportedServiceNames() override = 0; + + // XComponent + virtual void SAL_CALL + dispose() override; + virtual void SAL_CALL + addEventListener( const css::uno::Reference< css::lang::XEventListener >& Listener ) override; + virtual void SAL_CALL + removeEventListener( const css::uno::Reference< css::lang::XEventListener >& Listener ) override; + + // XContent + virtual css::uno::Reference< css::ucb::XContentIdentifier > SAL_CALL + getIdentifier() override; + virtual OUString SAL_CALL + getContentType() override = 0; + virtual void SAL_CALL + addContentEventListener( + const css::uno::Reference< css::ucb::XContentEventListener >& Listener ) override; + virtual void SAL_CALL + removeContentEventListener( + const css::uno::Reference< css::ucb::XContentEventListener >& Listener ) override; + + // XCommandProcessor + virtual sal_Int32 SAL_CALL + createCommandIdentifier() override; + virtual css::uno::Any SAL_CALL + execute( const css::ucb::Command& aCommand, + sal_Int32 CommandId, + const css::uno::Reference< css::ucb::XCommandEnvironment >& Environment ) override = 0; + virtual void SAL_CALL + abort( sal_Int32 CommandId ) override = 0; + + // XPropertiesChangeNotifier + virtual void SAL_CALL + addPropertiesChangeListener( + const css::uno::Sequence< OUString >& PropertyNames, + const css::uno::Reference< css::beans::XPropertiesChangeListener >& Listener ) override; + virtual void SAL_CALL + removePropertiesChangeListener( + const css::uno::Sequence< OUString >& PropertyNames, + const css::uno::Reference< css::beans::XPropertiesChangeListener >& Listener ) override; + + // XCommandInfoChangeNotifier + virtual void SAL_CALL + addCommandInfoChangeListener( + const css::uno::Reference< css::ucb::XCommandInfoChangeListener >& Listener ) override; + virtual void SAL_CALL + removeCommandInfoChangeListener( + const css::uno::Reference< css::ucb::XCommandInfoChangeListener >& Listener ) override; + + // XPropertyContainer + + /** + * This method adds a property to the content according to the interface + * specification. The properties will be stored using the service + * com.sun.star.ucb.Store. + * + * Note: You may provide your own implementation of this method, for + * instance, if your data source supports adding/removing of properties. + * Don't forget to return the meta data for these properties in your + * implementation of getPropertyInfoTable. + */ + virtual void SAL_CALL + addProperty( const OUString& Name, + sal_Int16 Attributes, + const css::uno::Any& DefaultValue ) override; + + /** + * This method removes a property from the content according to the + * interface specification. The properties will be stored using the + * service com.sun.star.ucb.Store. + * + * Note: You may provide your own implementation of this method, for + * instance, if your data source supports adding/removing of properties. + * Don't forget to return the meta data for these properties in your + * implementation of getPropertyInfoTable. + */ + virtual void SAL_CALL + removeProperty( const OUString& Name ) override; + + // XPropertySetInfoChangeNotifier + virtual void SAL_CALL + addPropertySetInfoChangeListener( + const css::uno::Reference< css::beans::XPropertySetInfoChangeListener >& Listener ) override; + virtual void SAL_CALL + removePropertySetInfoChangeListener( + const css::uno::Reference< css::beans::XPropertySetInfoChangeListener >& Listener ) override; + + // XChild + + /** + * This method returns the content representing the parent of a content, + * if such a parent exists. The implementation of this method uses your + * implementation of getParentURL. + */ + virtual css::uno::Reference< css::uno::XInterface > SAL_CALL + getParent() override; + + /** + * The implementation of this method always throws a NoSupportException. + */ + virtual void SAL_CALL + setParent( const css::uno::Reference< css::uno::XInterface >& Parent ) override; + + + // Non-interface methods. + + + /** + * This method returns the provider of the content. + * + * @return the provider of the content. + */ + const rtl::Reference< ContentProviderImplHelper >& getProvider() const + { return m_xProvider; } +}; + +} // namespace ucbhelper + +#endif /* ! INCLUDED_UCBHELPER_CONTENTHELPER_HXX */ + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |